namespace ScrumSprintMonitor.ConfigEditor.Views.ConfigurationView
{
	#region #using Directives

	using System.Windows;
	using System.Windows.Controls;

	#endregion

	public static class PasswordHelper
	{
		public static readonly DependencyProperty AttachProperty = DependencyProperty.RegisterAttached("Attach", typeof(bool), typeof(PasswordHelper),
		                                                                                               new PropertyMetadata(false, Attach));

		private static readonly DependencyProperty IsUpdatingProperty = DependencyProperty.RegisterAttached("IsUpdating", typeof(bool),
		                                                                                                    typeof(PasswordHelper));

		public static readonly DependencyProperty PasswordProperty = DependencyProperty.RegisterAttached("Password", typeof(string), typeof(PasswordHelper),
		                                                                                                 new FrameworkPropertyMetadata(string.Empty,
		                                                                                                                               OnPasswordPropertyChanged));


		public static void SetAttach(DependencyObject dp, bool value)
		{
			dp.SetValue(AttachProperty, value);
		}

		public static bool GetAttach(DependencyObject dp)
		{
			return (bool) dp.GetValue(AttachProperty);
		}

		public static string GetPassword(DependencyObject dp)
		{
			return (string) dp.GetValue(PasswordProperty);
		}

		public static void SetPassword(DependencyObject dp, string value)
		{
			dp.SetValue(PasswordProperty, value);
		}

		private static bool GetIsUpdating(DependencyObject dp)
		{
			return (bool) dp.GetValue(IsUpdatingProperty);
		}

		private static void SetIsUpdating(DependencyObject dp, bool value)
		{
			dp.SetValue(IsUpdatingProperty, value);
		}

		private static void OnPasswordPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
		{
			var passwordBox = sender as PasswordBox;
			passwordBox.PasswordChanged -= PasswordChanged;

			if (!GetIsUpdating(passwordBox))
			{
				passwordBox.Password = (string) e.NewValue;
			}
			passwordBox.PasswordChanged += PasswordChanged;
		}

		private static void Attach(DependencyObject sender, DependencyPropertyChangedEventArgs e)
		{
			var passwordBox = sender as PasswordBox;

			if (passwordBox == null)
			{
				return;
			}

			if ((bool) e.OldValue)
			{
				passwordBox.PasswordChanged -= PasswordChanged;
			}

			if ((bool) e.NewValue)
			{
				passwordBox.PasswordChanged += PasswordChanged;
			}
		}

		private static void PasswordChanged(object sender, RoutedEventArgs e)
		{
			var passwordBox = sender as PasswordBox;
			SetIsUpdating(passwordBox, true);
			SetPassword(passwordBox, passwordBox.Password);
			SetIsUpdating(passwordBox, false);
		}
	}
}